Which of the following statements about the characteristics of the instantaneous center is incorrect?

Explanation

Option A is true because the instantaneous center is where one link rotates relative to another at a given instant. Option B is correct since the two links have no relative linear velocity at that point. Option C is true as those two links share the same velocity with a third link at the instantaneous center. However, option D is incorrect because the notation for the instantaneous center must follow specific conventions; simply using O2 or O12 without proper context can lead to confusion. Therefore, option D is the false statement.